"your esp8266 is not in network"

I’ve had an ESP8266, the two GPIO version, running my coffee pot for months. Suddenly the network can’t find it. My router can see it fine. I reloaded the blynk simple program using arduino, I updated the libraries, I tried 2 ESP8266 modules, I got a new token…but still no luck.
Has something changed?

//#define BLYNK_PRINT Serial // Comment this out to disable prints and save space
#include <BlynkSimpleEsp8266.h>
#include <ESP8266wifi.h>
char auth[] = “bunch of characters”;

void setup()
{
Serial.begin(9600);
Blynk.begin(auth, “yyyyyyyyy”, “xxxxxxxx”);
}

void loop()
{
Blynk.run();
}

Hello. You need to use latest Blynk library.